Supposedly the P95d allows you to set iserial via the control panel, but mine doesn't let me do that. Instead of 'U0/U1/U2' I get 'd0/d1' options.
Mine is a P95DW-B(P). I have no idea what that sub-variant means. I've seen P95DW, P95DW-N(S), P95DE, and there are probably others too.